《Multi-fold Sonogashira coupling: a new and convenient approach to obtain tetraalkynyl anthracenes with tunable photophysical properties》 was written by Islam, Khadimul; Narjinari, Himani; Bisarya, Akshara; Kumar, Akshai. Computed Properties of C14H8Br2 And the article was included in Organic & Biomolecular Chemistry in 2021. The article conveys some information:
For the first time, a direct single-step one-pot route to access nine new sym. tetraalkynylated anthracenes via Pd(CH3CN)2Cl2/cataCXiumA catalyzed tetra-fold Sonogashira coupling was reported. Five of these tetraalkynylated anthracenes was crystallog. characterized, with two of them exhibiting multiple interactions that significantly shorten the inter-planar distances in the solid-state structure. The rich photophys. properties exhibited by these mols. hold immense promise for future applications in sensors and optoelectronic devices. Two of the considered tetraalkynylated anthracenes comprising a D-π-A-π-D motif demonstrate solvatochromism and halochromism, with one of them showing a low bandgap of 1.79 eV. The remaining compounds demonstrate bandgaps in the range of 1.79-2.04 eV. In addition to this study using 9,10-Dibromoanthracene, there are many other studies that have used 9,10-Dibromoanthracene(cas: 523-27-3Computed Properties of C14H8Br2) was used in this study.
9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Computed Properties of C14H8Br2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary